It is quite possible all depends upon the sourcing of the parts at right price ... guys at Bilal Gunj Lahore told me it will cost around 150k or above roughly. Don`t know if thats right or not but I guess it could be less in Pindi or Peshawar.
Check these images of such conversions been done in Lahore.....these were for sale on the net few months back. Black one is 1986 model and blue one is 1992 i think.....cheers




